<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<style>
			.active{
				color: red;
			}
		</style>
	</head>
	<body>
		<div id="app">
				<!-- <h2 class="active">{{message}}</h2>
				<h2 :class="active">{{message}}</h2> -->
				
				<h2 :class="{active: isActive ,line:isLine}">{{message}}</h2>
				<h2 :class="getClass()">{{message}}</h2>
				<button @click="btnClick()">按钮</button>
		</div>
		
		<script src="../js/vue.js"></script>	
		<script>
			const app=new Vue({
				el: '#app',
				data: {
					message: '你好啊',
					active: 'active',
					isActive: true,
					isLine: true
				},
				methods:{
					btnClick(){
						this.isActive=!this.isActive;
					},
					getClass(){
						return {active: this.isActive ,line:this.isLine}
					}
				}
			})
		</script>	
	</body>
</html>
